Added temporary alert for Unrecognized App warning

Author: jongalloway

index.html

@@ -3,6 +3,9 @@
 title: "Open Live Writer"
 download: true
 ---
+<div class="alert alert-warning" role="alert">Due to a new code signing certificate, you may receive warnings from Windows Defender
+SmartScreen when you download and run the installer. For more information, see <a href="http://openlivewriter.org/tutorials/unrecognizedApp.html">this help page</a>.</div>
+
 <h3><a id="welcome-to-open-live-writer" class="anchor" href="#welcome-to-open-live-writer" aria-hidden="true"><span class="octicon octicon-link"></span></a>Welcome to Open Live Writer</h3>
 
 <p>Open Live Writer is like Word for your blog. Open Live Writer is a powerful, lightweight blog editor that